Resident. Widespread but local throughout Britain as far north as
Yorkshire.
Montgomeryshire Status

Few records.

Wingspan
:
M. 22-24mm. F. 28-30mm.
Confusion species

None.

Flight
time & Voltinity
(Univoltine)

Habitat

Still water & slow flowing rivers.
Foodplant

Pondweed spp.
Lifestage data

Aquatic. Eggs laid on foodplant. Larva spins leaves together into an
open web and feeds within, it makes occasional wriggling movements to
aid gas exchange. Pupates in large pinkish subaquatic cocoon attached
to a plant.